Text-book of botany, morphological and physiological . Fig. 25.—Pinus syl-oestris; radial longitudinal sec-tion through the wood of a rapidly growing branch ;cb cambial wood-cells; a—e older wood-cells; t ^ tbordered pits of the wood-cells, increasing in age ;st large pits where cells of the medullary rays lie nextthe wood-cells (X550)..

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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1875